Annual variation of oilseed rape habitat quality and role of grassy field margins for seed eating carabids in arable mosaics

2017 ◽  
Vol 20 (2) ◽  
pp. 234-245 ◽  
Author(s):  
Sarah Labruyere ◽  
Sandrine Petit ◽  
Benoit Ricci
Keyword(s):  
Habitat Quality ◽  
Oilseed Rape ◽  
Annual Variation ◽  
Field Margins ◽  
Seed Eating

scholarly journals Invertebrates and vegetation of field margins adjacent to crops subject to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide–tolerant crops

2003 ◽  
Vol 358 (1439) ◽  
pp. 1879-1898 ◽  
Author(s):  
◽  
D. B. Roy ◽  
D. A. Bohan ◽  
A. J. Haughton ◽  
M. O. Hill ◽  
...  
Keyword(s):  
Oilseed Rape ◽  
Genetically Modified ◽  
Plant Cover ◽  
The Other ◽  
Spray Drift ◽  
Field Margins ◽  
Herbicide Tolerant ◽  
Adjacent Field ◽  
Farm Scale ◽  
The Difference

The effects of management of genetically modified herbicide–tolerant (GMHT) crops on adjacent field margins were assessed for 59 maize, 66 beet and 67 spring oilseed rape sites. Fields were split into halves, one being sown with a GMHT crop and the other with the equivalent conventional non–GMHT crop. Margin vegetation was recorded in three components of the field margins. Most differences were in the tilled area, with fewer smaller effects mirroring them in the verge and boundary. In spring oilseed rape fields, the cover, flowering and seeding of plants were 25%, 44% and 39% lower, respectively, in the GMHT uncropped tilled margins. Similarly, for beet, flowering and seeding were 34% and 39% lower, respectively, in the GMHT margins. For maize, the effect was reversed, with plant cover and flowering 28% and 67% greater, respectively, in the GMHT half. Effects on butterflies mirrored these vegetation effects, with 24% fewer butterflies in margins of GMHT spring oilseed rape. The likely cause is the lower nectar supply in GMHT tilled margins and crop edges. Few large treatment differences were found for bees, gastropods or other invertebrates. Scorching of vegetation by herbicide–spray drift was on average 1.6% on verges beside conventional crops and 3.7% beside GMHT crops, the difference being significant for all three crops.

scholarly journals The role of auxin in cell separation in the dehiscence zone of oilseed rape pods

1997 ◽  
Vol 48 (7) ◽  
pp. 1423-1429 ◽  
Author(s):  
N. Chauvaux ◽  
R. Child ◽  
K. John ◽  
P. Ulvskov ◽  
B. Borkhardt ◽  
...  
Keyword(s):  
Oilseed Rape ◽  
Cell Separation ◽  
Dehiscence Zone

Effects of tannins on population dynamics of sympatric seed-eating rodents: the potential role of gut tannin-degrading bacteria

Oecologia ◽  
2018 ◽  
Vol 187 (3) ◽  
pp. 667-678 ◽  
Author(s):  
Yihao Zhang ◽  
Andrew W. Bartlow ◽  
Zhenyu Wang ◽  
Xianfeng Yi
Keyword(s):  
Population Dynamics ◽  
Potential Role ◽  
Degrading Bacteria ◽  
Seed Eating

scholarly journals Assessing the role of planetary and gravity waves in the vertical structure of ozone over midlatitudinal Europe

2019 ◽  
Vol 37 (4) ◽  
pp. 525-533
Author(s):  
Peter Križan
Keyword(s):  
Gravity Waves ◽  
Vertical Profile ◽  
Annual Variation ◽  
Vertical Structure ◽  
Planetary Waves ◽  
Ozone Content ◽  
Ozone Profile ◽  
Vertical Ozone Profile ◽  
Vertical Ozone

Abstract. Planetary and gravity waves play an important role in the dynamics of the atmosphere. They are present in the atmospheric distribution of temperature, wind, and ozone content. These waves are detectable also in the vertical profile of ozone and they cause its undulation. One of the structures occurring in the vertical ozone profile is laminae, which are narrow layers of enhanced or depleted ozone concentrations in the vertical ozone profile. They are connected with the total amount of ozone in the atmosphere and with the activity of the planetary and gravity waves. The aim of this paper is to quantify these processes in midlatitudinal Europe. We compare the occurrence of laminae induced by planetary waves (PL) with the occurrence of these induced by gravity waves (GL). We show that the PL are 10–20 times more frequent than that of GL. There is a strong annual variation of PL, while GL exhibit only a very weak variation. With the increasing lamina size the share of GL decreases and the share of PL increases. The vertical profile of lamina occurrence is different for PL and GL smaller than 2 mPa. For laminae greater than 2 mPa this difference is smaller.

scholarly journals Wing-size related habitat choice of Great Reed Warbler females: the role of habitat quality and management

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Thomas O. Mérő ◽  
Antun Žuljević ◽  
Katalin Varga ◽  
Szabolcs Lengyel
Keyword(s):  
Habitat Quality ◽  
Habitat Choice ◽  
Great Reed Warbler ◽  
Reed Warbler ◽  
Wing Size
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